Automorphisms of the generalized cluster complex

Published 10 Apr 2024 in math.CO | (2404.06945v1)

Abstract: It is proved that the generalized cluster complex defined by Fomin and Reading has a dihedral symmetry. Together with diagram symmetries, they generate its automorphism group. A consequence is a simple explicit formula for the order of this automorphism group.

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Matthieu Josuat-Vergès

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